Bài tập 3: Điền các từ thích hợp được cho sau vào chỗ trống

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Bài tập 3: Điền các từ thích hợp được cho sau vào chỗ trống

difficult - difficulty - hard - tough - arduous

  1. He usually has … presenting in front of a crowd.

2. This car has been reinforced as … as steel.

3. It is … for immigrants to this country to find a well-paid job.

4. It was an … journey through miles of desert.

5. He is a retired military veteran, he is now serving as an adviser to the army and has a reputation for being … as steel.